Hullo! So, I've recently created a program that makes it easier to create animated cameras. You create points with all the coordinates and then edit the transitions between them. The path of the transition is a quartic bézier, meaning that you get three control points that you can move around to affect the curve (see screenshot). Along with that, you can define how any of the quantities changes with time, which is a cubic bézier - you get two control points. You can save your progress to a custom .acd file and export to .xml, which you then import into JdNoa's Anicam and, without changing anything, export as .mdl & .mdx.
I'm looking for anyone who would like to test this, give some feedback and possibly ideas. There may be bugs that I am unaware of, though for now everything seems to be working fine.
So! If there's any volunteers, respond here or send me a PM and I'll get you the program.